Comment by XorNot

Vertically upright humanoids have a lot going for them: they don't occupy a lot of floor space, they can pull an object right into their center of gravity to manipulate it, and because they're familiar they're relatively easy to prototype actions for because they're our actions.

People always asser without evidence that humanoid isn't the best design, but there's a paucity of alternatives that don't make some type of tradeoff: humanoid might not be the best at anything, but it's clearly very good at a lot of things.